[imp] X-Originating-IP problem

[Michal Szymanski]

Hello,

Horde 2.2, IMP 3.1, postfix as MTA. I want X-Originating-IP appear in
outgoing mail. Everything goes fine, but in mail header i have only
header name without value (IP address). Contents of my header.txt:

X-Originating-IP: %REMOTE_ADDR%

Is it possible that variable name is not evaluated by php, or maybe it is
problem with postfix.

Greetings,

Michal Szymanski